Percent of Change

Front

What is Percent of Change?

Back

Percent of Change is a way to express how much a quantity has increased or decreased in relation to its original amount, calculated as (New Value - Original Value) / Original Value x 100%.

Front

How do you calculate the percent decrease?

Back

Percent Decrease = (Original Value - New Value) / Original Value x 100%.

Front

How do you calculate the percent increase?

Back

Percent Increase = (New Value - Original Value) / Original Value x 100%.

Front

If a price goes from $50 to $30, what is the percent decrease?

Back

Percent Decrease = (50 - 30) / 50 x 100% = 40%.

Front

If a salary increases from $40,000 to $50,000, what is the percent increase?

Back

Percent Increase = (50,000 - 40,000) / 40,000 x 100% = 25%.

Front

What is the formula for finding the final price after a discount?

Back

Final Price = Original Price - (Discount Percentage x Original Price).

Front

If a sweater originally costs $60 and is on sale for 25% off, what is the final price?

Back

Final Price = 60 - (0.25 x 60) = $45.

Front

What does a percent change of 0% indicate?

Back

A percent change of 0% indicates that there has been no change in the value.

Front

If the population of a town decreased from 1,000 to 800, what is the percent of change?

Back

Percent Decrease = (1000 - 800) / 1000 x 100% = 20%.

Front

What is the percent of change if a car's value drops from $20,000 to $15,000?

Back

Percent Decrease = (20000 - 15000) / 20000 x 100% = 25%.